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Toroid Electronics Meeting Minutes

June 19, 2006

Electronics/Triggering Discussion

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Contents

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Attendees:

John Dusatko

Mike Browne

Stephen Norum

Steve Smith

Hamid Shoaee

Sheng Peng

Tim Montagne

Michael Cecere

 

Agenda:

  1. Analog Electronics
  2. Trigger Generation

Presentation Materials:

PPT for meeting, June 19, M. Cecere

Project Timeline, M. Cecere

Minutes:

  • Toroid Manufacture Status
    • Tim says ceramic, brazed toroids should be here next week for testing
    • Toroid coil polarity not resolved yet, will pursue with ISA, with Steve's help
  • Will our system be fast enough for IM01, 120Hz Laser Feedback?
    • won't be implemented for a while, first operation at 1 - 30 Hz
  • Since using only 4 channels of each 16 channel IP330, may as well drive more signals
    • i.e. PS status (so IOC knows the toroid box is still alive)
    • add another DAC/buffers
  • Signal IOC when all 4 channels are ready for IOC ADC to convert
    • this should optimize time performance of system
    • should be trigger line on cable to IP330.
    • drive directly from PIC (with buffer? or just use DAC channel since already buffered)
    • Change IOC connector to SCSI to match other end. (straight-through, John?)
  • Analog Circuit Design
    • Bring Signal Straight to Integrating Op-Amp, no buffer
    • Put +/-1 stage immediately after int. op-amp (introduces off-set error, estimate this)
    • add buffer circuitry to schematics
  • Calibration Circuit Design seems OK
  • Use Vern Smith for intra-rack cabling?
  • Will Chuck Yee be able to do this job timely? seek other help?

Action Items:

  1. M. Cecere: Adjust circuit as described above
  2. M. Cecere: Need Test Plan
  3. M. Cecere: Add Mechnical Box design to timeline
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